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All Journal Science and Technology Indonesia Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology
Purwoto, Heri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics

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Enhancing Iota Carrageenan Soft Capsules with Modified Starch Perwatasari, Dayu Dian; Putri, Renny Primasari Gustia; Puspantari, Widya; Royanti, Ida; Wibowo, Des Saputro; Hidayat, Taufik; Wahyuni, Tuti; Purwoto, Heri; Manalu, Lamhot Parulian; Laksono, Hendrawan
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.183-190

Abstract

Due to the increasing demand for gelatin alternatives, iota carrageenan, a polymer derived from seaweed, is being explored as a potential base material for soft capsule production. However, the rheological properties of iota carrageenan alone are insufficient for commercial manufacturing, necessitating the addition of fillers such as modified starches. This study evaluates the performance of iota carrageenan-based soft capsule shells using modified cassava, potato, and sago starches as fillers. Various mechanical and rheological properties were assessed, including elongation, stickiness, tensile strength, and viscosity. The results demonstrated that modified cassava starch provided the best overall balance of mechanical properties, exhibiting superior moldability (47.56 mm elongation), flexibility, and moderate stickiness (567.45 gf). Scanning Electron Microscopy (SEM) analysis revealed that cassava starch capsules had a more uniform outer surface with smoother internal morphology than other starches. These findings suggest that modified cassava starch is a promising candidate for large-scale production of high-quality soft capsules.
Effects of Transglutaminase on the Gel Properties of Indonesian Catfish Surimi Using Response Surface Methodology Royanti, Ida; Nandyawati, Dewi; Putri, Renny Primasari Gustia; Kusumasmarawati, Ambar Dwi; Abidin, Kharis Yohan; Pradiva, Molina Indah; Dewi, Rizky Aulia Prasasti; Gebrina, Amanda Dwi; Purwoto, Heri; Widyasti, Erma
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 20, No 2 (2025): August 2025
Publisher : :Agency for Marine and Fisheries Research and Human Resources, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.1027

Abstract

Surimi is a myofibrillar fish protein, extracted mainly from marine fish, which is commonly used to produce fish balls, crab imitation products, and various other seafood substitutes. However, finding an alternative fish from freshwater, such as freshwater catfish, is important, although its drawbacks include low gel strength and water-holding capacity. To address this problem, transglutaminase addition can maintain the surimi quality. This study aimed to improve catfish surimi characteristics by optimizing surimi production with various transglutaminase concentrations and incubation times. It used Response Surface Methodology (RSM) with Central Composite Design (CCD) to evaluate the effect of Enzyme Concentration and Incubation Time. The result showed that the catfish surimi gel strength, chewiness, whiteness, and water-holding capacity were respectively 927.513 g.cm, 3,747.18 g, 79.95 %, and 91.37 %. It was obtained by the optimum condition of surimi production with the addition of 0.85 % w/w transglutaminase and an incubation time of 36 minutes. The overall study provides insight for surimi producers to maintain surimi characteristics from freshwater fish, such as catfish.
Co-Authors Dayu Dian Perwatasari Dewi, Rizky Aulia Prasasti Gebrina, Amanda Dwi Hendrawan Laksono Kharis Yohan Abidin, Kharis Yohan Kusumasmarawati, Ambar Dwi Lamhot Parulian Manalu, Lamhot Parulian NANDYAWATI, DEWI Pradiva, Molina Indah Puspantari, Widya Putri, Renny Primasari Gustia Royanti, Ida Taufik Hidayat Wahyuni, Tuti Wibowo, Des Saputro Widyasti, Erma